• Ms. Pallavi R
• Dr. G. C. Banuprakash

Wireless Sensor Networks has been attracting various researchers ever since its appreciation for critical applications. The history of research has always been to improve the QoS like coverage, connectivity, network lifetime, latency etc. Due to the random deployment of sensor nodes on the field of observation, few nodes have burdened to take up the responsibility of maintaining a continuous network connectivity. Such nodes are the leader nodes or critical nodes. Identification of such nodes can be of great importance to extent the network lifetime. This paper proposes a unique way of identifying the leaders through centrality measures in the initial deployment phase. The paper concludes to summarise that harmonic-influence centrality identifies leaders more optimally than the betweenness centrality and closeness centrality through experimental setup. The inadequacy of metrics obtained by betweenness and closeness indices are discussed in detail, showing the significance of the harmonic index in leadership recognition across a network.

Wireless Sensor Networks, Network Reliability, Centrality, Closeness, Betweenness, Harmonic-influence.

"Centrality Measures To Ascertain Leaders In Wireless Sensor Networks", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 6, page no.12-16, June 2019, Available :http://www.jetir.org/papers/JETIR1906Z02.pdf

"Centrality Measures To Ascertain Leaders In Wireless Sensor Networks", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 6, page no. pp12-16, June 2019, Available at : http://www.jetir.org/papers/JETIR1906Z02.pdf